1
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
The points (1, 3) and (5, 1) are two opposite vertices of a rectangle. The other two vertices lie on the line y = 2x + c. What is the value of c?
A
2
B
$$-$$2
C
4
D
$$-$$4
2
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
If the lines 3y + 4x = 1, y = x + 5 and 5y + bx = 3 are concurrent, then what is the value of b?
A
1
B
3
C
6
D
$${1 \over 2}$$
3
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
What is the equation of the straight line which is perpendicular to y = x and passes through (3, 2) ?
A
x $$-$$ y = 5
B
x + y = 5
C
x + y = 1
D
x $$-$$ y = 1
4
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
The straight lines x + y $$-$$ 4 = 0, 3x + y $$-$$ 4 = 0 and x + 3y $$-$$ 4 = 0 form a triangle, which is
A
isosceles
B
right angled
C
equilateral
D
scalene
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